Inventor · disambiguated record
Eiji Hirooka
Also filed as: HIROOKA EIJI
8 granted patents·103 citations·filing 1988–1999
87Inventor score
Top patents by PatentIndex Score
8 records- 0169US5486816AFire detector having optic base clamping optic elements to a circuit boardNOHMI BOSAI LTD·Filed 1993·Granted Jan 23, 1996·46 cites·23 claims
- 0258US5154074ARoll with width adjusting functionSUMITOMO METAL IND·Filed 1991·Granted Oct 13, 1992·12 cites·22 claims
- 0347US4860416AVariable-crown rollSUMITOMO METAL IND·Filed 1988·Granted Aug 29, 1989·6 cites·42 claims
- 0445US5872517AFire detectorNOHMI BOSAI LTD·Filed 1997·Granted Feb 16, 1999·12 cites·11 claims
- 0544US5670948AFire detectorNOHMI BOSAI LTD·Filed 1993·Granted Sep 23, 1997·11 cites·21 claims
- 0641US6195003B1Fire alarming systemNOHMI BOSAI LTD·Filed 1999·Granted Feb 27, 2001·11 cites·14 claims
- 0731US6091328AFire alarming systemNOHMI BOSAI LTD·Filed 1997·Granted Jul 18, 2000·5 cites·6 claims
- 0828US5986556AFire detectorNOHMI BOSAI LTD·Filed 1997·Granted Nov 16, 1999·0 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Eiji Hirooka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →